According to my sources, the scenario writer (as a young man) walked in on this scene and thought she was being raped -- and his imagination magnified and worsened the scene.

Plus I think he was very young at the time -- under 10 maybe? I'm sure there are movie scenes that really freaked you out at that age that would just look hokey to you now.

Maybe it's because we cannot grasp the true form of Giygas.

Well, considering that Giygus is an alien, he's probably into anal probing. So I figure it's pronounced "Gig-Us" as a play on words for what he's going to do to the human race.

So, I don't know, have fun with that.